In Keysight Technologies, Inc. v. United States, ___ Fed.Cl. ___ (7/2/26), the Court held invalid a Treasury Regulation designed to plug a gap in the statutory text. The opinion may be found: CFC here, TN here, GS here.
The Court opens with this sentence projecting the outcome (Slip Op. 1):
When Chevron fell, so too did the presumption that statutory ambiguity favors the agency. Chevron U.S.A., Inc. v. Natural Resources Defense Council, Inc., 467 U.S. 837 (1984), overruled by Loper Bright Enterprises v. Raimondo, 603 U.S. 369 (2024).
If that were not clear enough as to where it is going, the Court opens the next paragraph (bold face supplied by JAT):
This controversy relates to the Treasury’s self-inflicted fix of a mismatch between foreign subsidiaries with fiscal- or calendar-year tax filing requirements that Congress quietly built into the global intangible low-taxed income ("GILTI") statutory scheme.
And the next paragraph (bold face supplied by JAT):
The Treasury’s antipathy for this inconsistency resulted in the Secretary promulgating Regulation 1.951A-2(c)(5) ("the Regulation").
I won’t parse the quoted text any further (although my bold face may imply something).
The technical issue was whether Treasury could, by interpretive regulation, fix what appears textually to be a timing glitch producing materially different tax result based on differences in tax years between calendar year taxpayers and fiscal year taxpayers. As the Court says (Slip Op. 2): “Enactment of the TCJA created an inconsistency between treatment of certain taxpayers depending on whether they were fiscal-year or calendar-year filers.”
Basically, the taxpayer argued that it, as a fiscal year taxpayer, was entitled to a benefit that a calendar year taxpayer could not achieve. Without wallowing around in the details, it appears to me that an intuitive view of how Congress enacts tax legislation, one can fairly infer that Congress did not intend the result that the regulation sought to forbid and the Court blesses. Congress appears to have had no specifically articulated intent on the precise issue, but Congress generally does not make such distinctions to permit disparities between otherwise similarly situated taxpayers.